97087440 has 40 divisors (see below), whose sum is σ = 300971808. Its totient is φ = 25889920.

The previous prime is 97087433. The next prime is 97087451. The reversal of 97087440 is 4478079.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202026 + ... + 202505.

Almost surely, 2^97087440 is an apocalyptic number.

It is an amenable number.

97087440 is an abundant number, since it is smaller than the sum of its proper divisors (203884368).

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

97087440 is a wasteful number, since it uses less digits than its factorization.

97087440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404547 (or 404541 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 97087440 is about 9853.2958952830. The cubic root of 97087440 is about 459.6081098341.

It can be divided in two parts, 970 and 87440, that added together give a triangular number (88410 = T₄₂₀).

The spelling of 97087440 in words is "ninety-seven million, eighty-seven thousand, four hundred forty".