61442416 has 40 divisors (see below), whose sum is σ = 140749920. Its totient is φ = 25423104.

The previous prime is 61442401. The next prime is 61442429. The reversal of 61442416 is 61424416.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6211 + ... + 12706.

It is an arithmetic number, because the mean of its divisors is an integer number (3518748).

Almost surely, 2^61442416 is an apocalyptic number.

It is an amenable number.

61442416 is an abundant number, since it is smaller than the sum of its proper divisors (79307504).

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

61442416 is a wasteful number, since it uses less digits than its factorization.

61442416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18961 (or 18955 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 61442416 is about 7838.5212891208. The cubic root of 61442416 is about 394.5991040198.

The spelling of 61442416 in words is "sixty-one million, four hundred forty-two thousand, four hundred sixteen".