454021902 has 64 divisors (see below), whose sum is σ = 1031035200. Its totient is φ = 148055040.

The previous prime is 454021889. The next prime is 454021921. The reversal of 454021902 is 209120454.

It is a super-2 number, since 2×454021902² = 412271774991395208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1109874 + ... + 1110282.

It is an arithmetic number, because the mean of its divisors is an integer number (16109925).

Almost surely, 2^454021902 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 454021902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (515517600).

454021902 is an abundant number, since it is smaller than the sum of its proper divisors (577013298).

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

454021902 is a wasteful number, since it uses less digits than its factorization.

454021902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818 (or 812 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 454021902 is about 21307.7897023600. The cubic root of 454021902 is about 768.5856433882.

The spelling of 454021902 in words is "four hundred fifty-four million, twenty-one thousand, nine hundred two".