1254189428 has 24 divisors (see below), whose sum is σ = 2272958688. Its totient is φ = 605124576.

The previous prime is 1254189397. The next prime is 1254189437. The reversal of 1254189428 is 8249814521.

It is a super-2 number, since 2×1254189428² = 3145982242613934368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29651 + ... + 58202.

It is an arithmetic number, because the mean of its divisors is an integer number (94706612).

Almost surely, 2^1254189428 is an apocalyptic number.

It is an amenable number.

1254189428 is a deficient number, since it is larger than the sum of its proper divisors (1018769260).

1254189428 is a wasteful number, since it uses less digits than its factorization.

1254189428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87983 (or 87981 counting only the distinct ones).

The product of its digits is 184320, while the sum is 44.

The square root of 1254189428 is about 35414.5369587123. The cubic root of 1254189428 is about 1078.4194495816.

The spelling of 1254189428 in words is "one billion, two hundred fifty-four million, one hundred eighty-nine thousand, four hundred twenty-eight".