97880436 has 18 divisors (see below), whose sum is σ = 247420082. Its totient is φ = 32626800.

The previous prime is 97880411. The next prime is 97880437. The reversal of 97880436 is 63408879.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 95648400 + 2232036 = 9780^2 + 1494^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 97880391 and 97880400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97880437) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1359415 + ... + 1359486.

Almost surely, 2^97880436 is an apocalyptic number.

It is an amenable number.

97880436 is an abundant number, since it is smaller than the sum of its proper divisors (149539646).

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

97880436 is a wasteful number, since it uses less digits than its factorization.

97880436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2718911 (or 2718906 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 97880436 is about 9893.4541996211. The cubic root of 97880436 is about 460.8560555541.

The spelling of 97880436 in words is "ninety-seven million, eight hundred eighty thousand, four hundred thirty-six".