97776420 has 48 divisors (see below), whose sum is σ = 312885888. Its totient is φ = 22348800.

The previous prime is 97776377. The next prime is 97776433. The reversal of 97776420 is 2467779.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115981 + ... + 116820.

It is an arithmetic number, because the mean of its divisors is an integer number (6518456).

Almost surely, 2^97776420 is an apocalyptic number.

It is an amenable number.

97776420 is an abundant number, since it is smaller than the sum of its proper divisors (215109468).

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

97776420 is a wasteful number, since it uses less digits than its factorization.

97776420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232820 (or 232818 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 42.

The square root of 97776420 is about 9888.1959932032. The cubic root of 97776420 is about 460.6927495320.

The spelling of 97776420 in words is "ninety-seven million, seven hundred seventy-six thousand, four hundred twenty".