61902288 has 180 divisors, whose sum is σ = 208760448. Its totient is φ = 17055360.

The previous prime is 61902277. The next prime is 61902289. The reversal of 61902288 is 88220916.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61902289) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 218595 + ... + 218877.

Almost surely, 2^61902288 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 61902288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104380224).

61902288 is an abundant number, since it is smaller than the sum of its proper divisors (146858160).

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

61902288 is a wasteful number, since it uses less digits than its factorization.

61902288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 61902288 is about 7867.8007092198. The cubic root of 61902288 is about 395.5811304051.

The spelling of 61902288 in words is "sixty-one million, nine hundred two thousand, two hundred eighty-eight".