49420900 has 81 divisors (see below), whose sum is σ = 116326539. Its totient is φ = 18221760.

The previous prime is 49420897. The next prime is 49420909. The reversal of 49420900 is 902494.

The square root of 49420900 is 7030.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 4691556 + 44729344 = 2166^2 + 6688^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49420909) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1335682 + ... + 1335718.

Almost surely, 2^49420900 is an apocalyptic number.

49420900 is the 7030-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49420900

49420900 is an abundant number, since it is smaller than the sum of its proper divisors (66905639).

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

49420900 is a wasteful number, since it uses less digits than its factorization.

49420900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 63 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The cubic root of 49420900 is about 366.9753415413.

The spelling of 49420900 in words is "forty-nine million, four hundred twenty thousand, nine hundred".