97432390 has 32 divisors (see below), whose sum is σ = 192326400. Its totient is φ = 35244000.

The previous prime is 97432369. The next prime is 97432397. The reversal of 97432390 is 9323479.

It is a super-2 number, since 2×97432390² = 18986141242224200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97432397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19665 + ... + 24115.

It is an arithmetic number, because the mean of its divisors is an integer number (6010200).

Almost surely, 2^97432390 is an apocalyptic number.

97432390 is a deficient number, since it is larger than the sum of its proper divisors (94894010).

97432390 is a wasteful number, since it uses less digits than its factorization.

97432390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4668.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 97432390 is about 9870.7846699237. The cubic root of 97432390 is about 460.1517930053.

The spelling of 97432390 in words is "ninety-seven million, four hundred thirty-two thousand, three hundred ninety".