97801900 has 72 divisors (see below), whose sum is σ = 250428416. Its totient is φ = 32443200.

The previous prime is 97801889. The next prime is 97801903. The reversal of 97801900 is 910879.

It is a super-2 number, since 2×97801900² = 19130423287220000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (97801903) 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, 19447 + ... + 23953.

Almost surely, 2^97801900 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 97801900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125214208).

97801900 is an abundant number, since it is smaller than the sum of its proper divisors (152626516).

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

97801900 is a wasteful number, since it uses less digits than its factorization.

97801900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4559 (or 4552 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 97801900 is about 9889.4843141592. The cubic root of 97801900 is about 460.7327640595.

The spelling of 97801900 in words is "ninety-seven million, eight hundred one thousand, nine hundred".