641472450 has 48 divisors (see below), whose sum is σ = 1624717440. Its totient is φ = 167417920.

The previous prime is 641472449. The next prime is 641472457. The reversal of 641472450 is 54274146.

It is a super-2 number, since 2×641472450² = 822973808218005000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641472457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38445 + ... + 52544.

It is an arithmetic number, because the mean of its divisors is an integer number (33848280).

Almost surely, 2^641472450 is an apocalyptic number.

641472450 is an abundant number, since it is smaller than the sum of its proper divisors (983244990).

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

641472450 is a wasteful number, since it uses less digits than its factorization.

641472450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91051 (or 91046 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 641472450 is about 25327.3064102758. The cubic root of 641472450 is about 862.4342651015.

The spelling of 641472450 in words is "six hundred forty-one million, four hundred seventy-two thousand, four hundred fifty".