28690950 has 48 divisors (see below), whose sum is σ = 74905920. Its totient is φ = 7247520.

The previous prime is 28690927. The next prime is 28690973. The reversal of 28690950 is 5909682.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28690927) and next prime (28690973).

It is a super-2 number, since 2×28690950² = 1646341223805000, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28690899 and 28690908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2184 + ... + 7883.

It is an arithmetic number, because the mean of its divisors is an integer number (1560540).

Almost surely, 2^28690950 is an apocalyptic number.

28690950 is an abundant number, since it is smaller than the sum of its proper divisors (46214970).

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

28690950 is a wasteful number, since it uses less digits than its factorization.

28690950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10101 (or 10096 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 28690950 is about 5356.3933761441. The cubic root of 28690950 is about 306.1364037947.

The spelling of 28690950 in words is "twenty-eight million, six hundred ninety thousand, nine hundred fifty".