28151650 has 24 divisors (see below), whose sum is σ = 53032320. Its totient is φ = 11116560.

The previous prime is 28151633. The next prime is 28151653. The reversal of 28151650 is 5615182.

It is not an unprimeable number, because it can be changed into a prime (28151653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 387 + ... + 7513.

It is an arithmetic number, because the mean of its divisors is an integer number (2209680).

Almost surely, 2^28151650 is an apocalyptic number.

28151650 is a deficient number, since it is larger than the sum of its proper divisors (24880670).

28151650 is a wasteful number, since it uses less digits than its factorization.

28151650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7218 (or 7213 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 28151650 is about 5305.8128500730. The cubic root of 28151650 is about 304.2061231941.

It can be divided in two parts, 2815 and 1650, that added together give a triangular number (4465 = T₉₄).

The spelling of 28151650 in words is "twenty-eight million, one hundred fifty-one thousand, six hundred fifty".