36401840 has 40 divisors (see below), whose sum is σ = 85046640. Its totient is φ = 14489856.

The previous prime is 36401803. The next prime is 36401861. The reversal of 36401840 is 4810463.

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

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, 17327 + ... + 19313.

It is an arithmetic number, because the mean of its divisors is an integer number (2126166).

Almost surely, 2^36401840 is an apocalyptic number.

It is an amenable number.

36401840 is an abundant number, since it is smaller than the sum of its proper divisors (48644800).

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

36401840 is a wasteful number, since it uses less digits than its factorization.

36401840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2229 (or 2223 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 36401840 is about 6033.3937381875. The cubic root of 36401840 is about 331.4167433919.

The spelling of 36401840 in words is "thirty-six million, four hundred one thousand, eight hundred forty".