15428340 has 48 divisors (see below), whose sum is σ = 48000960. Its totient is φ = 4114080.

The previous prime is 15428339. The next prime is 15428351. The reversal of 15428340 is 4382451.

15428340 is a `hidden beast` number, since 1 + 542 + 83 + 40 = 666.

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 15 ways as a sum of consecutive naturals, for example, 13746 + ... + 14825.

It is an arithmetic number, because the mean of its divisors is an integer number (1000020).

Almost surely, 2^15428340 is an apocalyptic number.

15428340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15428340 is an abundant number, since it is smaller than the sum of its proper divisors (32572620).

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

15428340 is a wasteful number, since it uses less digits than its factorization.

15428340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28589 (or 28581 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 15428340 is about 3927.8925647222. The cubic root of 15428340 is about 248.9467152638.

The spelling of 15428340 in words is "fifteen million, four hundred twenty-eight thousand, three hundred forty".