40370040 has 48 divisors (see below), whose sum is σ = 131203800. Its totient is φ = 10765248.

The previous prime is 40370023. The next prime is 40370051. The reversal of 40370040 is 4007304.

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 = 40369995 and 40370022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55710 + ... + 56429.

Almost surely, 2^40370040 is an apocalyptic number.

40370040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40370040 is an abundant number, since it is smaller than the sum of its proper divisors (90833760).

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

40370040 is a wasteful number, since it uses less digits than its factorization.

40370040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112156 (or 112149 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 40370040 is about 6353.7422044021. The cubic root of 40370040 is about 343.0465530798.

Adding to 40370040 its reverse (4007304), we get a palindrome (44377344).

The spelling of 40370040 in words is "forty million, three hundred seventy thousand, forty".