40621000 has 96 divisors (see below), whose sum is σ = 110705400. Its totient is φ = 13910400.

The previous prime is 40620997. The next prime is 40621033. The reversal of 40621000 is 12604.

It can be written as a sum of positive squares in 4 ways, for example, as 13351716 + 27269284 = 3654^2 + 5222^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48586 + ... + 49414.

Almost surely, 2^40621000 is an apocalyptic number.

40621000 is a gapful number since it is divisible by the number (40) 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 40621000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55352700).

40621000 is an abundant number, since it is smaller than the sum of its proper divisors (70084400).

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

40621000 is a wasteful number, since it uses less digits than its factorization.

40621000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864 (or 843 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 40621000 is about 6373.4605984504. The cubic root of 40621000 is about 343.7559337819.

Adding to 40621000 its reverse (12604), we get a palindrome (40633604).

The spelling of 40621000 in words is "forty million, six hundred twenty-one thousand".