97000020 has 72 divisors (see below), whose sum is σ = 316874376. Its totient is φ = 23876352.

The previous prime is 97000019. The next prime is 97000021. The reversal of 97000020 is 2000079.

It is an interprime number because it is at equal distance from previous prime (97000019) and next prime (97000021).

It can be written as a sum of positive squares in 4 ways, for example, as 1468944 + 95531076 = 1212^2 + 9774^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 96999957 and 97000002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97000021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18387 + ... + 23066.

It is an arithmetic number, because the mean of its divisors is an integer number (4401033).

Almost surely, 2^97000020 is an apocalyptic number.

97000020 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

97000020 is an abundant number, since it is smaller than the sum of its proper divisors (219874356).

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

97000020 is a wasteful number, since it uses less digits than its factorization.

97000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41481 (or 41476 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 97000020 is about 9848.8588171422. The cubic root of 97000020 is about 459.4701207994.

Adding to 97000020 its reverse (2000079), we get a palindrome (99000099).

The spelling of 97000020 in words is "ninety-seven million, twenty", and thus it is an aban number and an uban number.