7400900 has 36 divisors (see below), whose sum is σ = 17298372. Its totient is φ = 2732160.

The previous prime is 7400893. The next prime is 7400903. The reversal of 7400900 is 90047.

It can be written as a sum of positive squares in 6 ways, for example, as 2027776 + 5373124 = 1424^2 + 2318^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (7400903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1547 + ... + 4146.

Almost surely, 2^7400900 is an apocalyptic number.

It is an amenable number.

7400900 is an abundant number, since it is smaller than the sum of its proper divisors (9897472).

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

7400900 is a wasteful number, since it uses less digits than its factorization.

7400900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5720 (or 5713 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 7400900 is about 2720.4595200076. The cubic root of 7400900 is about 194.8774158327.

Adding to 7400900 its reverse (90047), we get a palindrome (7490947).

The spelling of 7400900 in words is "seven million, four hundred thousand, nine hundred".