40621020 has 48 divisors (see below), whose sum is σ = 124080768. Its totient is φ = 9847360.

The previous prime is 40620997. The next prime is 40621033. The reversal of 40621020 is 2012604.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30114 + ... + 31433.

It is an arithmetic number, because the mean of its divisors is an integer number (2585016).

Almost surely, 2^40621020 is an apocalyptic number.

It is an amenable number.

40621020 is an abundant number, since it is smaller than the sum of its proper divisors (83459748).

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

40621020 is a wasteful number, since it uses less digits than its factorization.

40621020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61570 (or 61568 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 40621020 is about 6373.4621674566. The cubic root of 40621020 is about 343.7559901986.

Adding to 40621020 its reverse (2012604), we get a palindrome (42633624).

The spelling of 40621020 in words is "forty million, six hundred twenty-one thousand, twenty".