274436428 has 48 divisors (see below), whose sum is σ = 568680448. Its totient is φ = 113400000.

The previous prime is 274436387. The next prime is 274436443. The reversal of 274436428 is 824634472.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365053 + ... + 365803.

Almost surely, 2^274436428 is an apocalyptic number.

274436428 is a gapful number since it is divisible by the number (28) 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 274436428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284340224).

274436428 is an abundant number, since it is smaller than the sum of its proper divisors (294244020).

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

274436428 is a wasteful number, since it uses less digits than its factorization.

274436428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214 (or 1212 counting only the distinct ones).

The product of its digits is 258048, while the sum is 40.

The square root of 274436428 is about 16566.1229018742. The cubic root of 274436428 is about 649.8511911814.

The spelling of 274436428 in words is "two hundred seventy-four million, four hundred thirty-six thousand, four hundred twenty-eight".