61426944 has 72 divisors (see below), whose sum is σ = 181670720. Its totient is φ = 20473344.

The previous prime is 61426931. The next prime is 61426949. The reversal of 61426944 is 44962416.

It is a tau number, because it is divible by the number of its divisors (72).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 61426899 and 61426908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61426949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2469 + ... + 11355.

Almost surely, 2^61426944 is an apocalyptic number.

61426944 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61426944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90835360).

61426944 is an abundant number, since it is smaller than the sum of its proper divisors (120243776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61426944 is an equidigital number, since it uses as much as digits as its factorization.

61426944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8912 (or 8892 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 61426944 is about 7837.5343061450. The cubic root of 61426944 is about 394.5659795093.

The spelling of 61426944 in words is "sixty-one million, four hundred twenty-six thousand, nine hundred forty-four".