61239888 has 120 divisors (see below), whose sum is σ = 187314400. Its totient is φ = 19315584.

The previous prime is 61239863. The next prime is 61239889. The reversal of 61239888 is 88893216.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61239889) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73458 + ... + 74286.

Almost surely, 2^61239888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61239888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93657200).

61239888 is an abundant number, since it is smaller than the sum of its proper divisors (126074512).

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

61239888 is a wasteful number, since it uses less digits than its factorization.

61239888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871 (or 853 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 61239888 is about 7825.5918626006. The cubic root of 61239888 is about 394.1650643546.

The spelling of 61239888 in words is "sixty-one million, two hundred thirty-nine thousand, eight hundred eighty-eight".