40021300 has 36 divisors (see below), whose sum is σ = 94743936. Its totient is φ = 14552800.

The previous prime is 40021273. The next prime is 40021313. The reversal of 40021300 is 312004.

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 17092 + ... + 19291.

It is an arithmetic number, because the mean of its divisors is an integer number (2631776).

Almost surely, 2^40021300 is an apocalyptic number.

It is an amenable number.

40021300 is an abundant number, since it is smaller than the sum of its proper divisors (54722636).

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

40021300 is a wasteful number, since it uses less digits than its factorization.

40021300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36408 (or 36401 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 40021300 is about 6326.2390090796. The cubic root of 40021300 is about 342.0558827096.

Adding to 40021300 its reverse (312004), we get a palindrome (40333304).

The spelling of 40021300 in words is "forty million, twenty-one thousand, three hundred".