97620138 has 144 divisors (see below), whose sum is σ = 280512960. Its totient is φ = 23950080.

The previous prime is 97620113. The next prime is 97620143. The reversal of 97620138 is 83102679.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 289506 + ... + 289842.

Almost surely, 2^97620138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97620138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140256480).

97620138 is an abundant number, since it is smaller than the sum of its proper divisors (182892822).

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

97620138 is a wasteful number, since it uses less digits than its factorization.

97620138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 97620138 is about 9880.2903803481. The cubic root of 97620138 is about 460.4471675605.

The spelling of 97620138 in words is "ninety-seven million, six hundred twenty thousand, one hundred thirty-eight".