40387356 has 96 divisors (see below), whose sum is σ = 111283200. Its totient is φ = 12640320.

The previous prime is 40387349. The next prime is 40387357. The reversal of 40387356 is 65378304.

It is a happy number.

It is a super-2 number, since 2×40387356² = 3262277049341472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 40387356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40387357) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176250 + ... + 176478.

It is an arithmetic number, because the mean of its divisors is an integer number (1159200).

Almost surely, 2^40387356 is an apocalyptic number.

40387356 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40387356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55641600).

40387356 is an abundant number, since it is smaller than the sum of its proper divisors (70895844).

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

40387356 is a wasteful number, since it uses less digits than its factorization.

40387356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 40387356 is about 6355.1047198296. The cubic root of 40387356 is about 343.0955939445.

The spelling of 40387356 in words is "forty million, three hundred eighty-seven thousand, three hundred fifty-six".