28952740 has 24 divisors (see below), whose sum is σ = 61209792. Its totient is φ = 11503200.

The previous prime is 28952731. The next prime is 28952753. The reversal of 28952740 is 4725982.

It is a super-2 number, since 2×28952740² = 1676522307015200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28952740.

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, 1774 + ... + 7813.

It is an arithmetic number, because the mean of its divisors is an integer number (2550408).

Almost surely, 2^28952740 is an apocalyptic number.

28952740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28952740 is an abundant number, since it is smaller than the sum of its proper divisors (32257052).

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

28952740 is a wasteful number, since it uses less digits than its factorization.

28952740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9747 (or 9745 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 28952740 is about 5380.7750371113. The cubic root of 28952740 is about 307.0646979264.

It can be divided in two parts, 28952 and 740, that added together give a palindrome (29692).

The spelling of 28952740 in words is "twenty-eight million, nine hundred fifty-two thousand, seven hundred forty".