61898928 has 160 divisors (see below), whose sum is σ = 202653696. Its totient is φ = 15842304.

The previous prime is 61898917. The next prime is 61898939. The reversal of 61898928 is 82989816.

It is an interprime number because it is at equal distance from previous prime (61898917) and next prime (61898939).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161425 + ... + 161807.

Almost surely, 2^61898928 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 61898928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101326848).

61898928 is an abundant number, since it is smaller than the sum of its proper divisors (140754768).

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

61898928 is a wasteful number, since it uses less digits than its factorization.

61898928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451 (or 445 counting only the distinct ones).

The product of its digits is 497664, while the sum is 51.

The square root of 61898928 is about 7867.5871777820. The cubic root of 61898928 is about 395.5739730141.

It can be divided in two parts, 61898 and 928, that added together give a palindrome (62826).

The spelling of 61898928 in words is "sixty-one million, eight hundred ninety-eight thousand, nine hundred twenty-eight".