28898420 has 48 divisors (see below), whose sum is σ = 62995968. Its totient is φ = 11128320.

The previous prime is 28898393. The next prime is 28898447. The reversal of 28898420 is 2489882.

It is an interprime number because it is at equal distance from previous prime (28898393) and next prime (28898447).

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, 66524 + ... + 66956.

It is an arithmetic number, because the mean of its divisors is an integer number (1312416).

Almost surely, 2^28898420 is an apocalyptic number.

28898420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28898420 is an abundant number, since it is smaller than the sum of its proper divisors (34097548).

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

28898420 is a wasteful number, since it uses less digits than its factorization.

28898420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 558 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 28898420 is about 5375.7250673746. The cubic root of 28898420 is about 306.8725434408.

The spelling of 28898420 in words is "twenty-eight million, eight hundred ninety-eight thousand, four hundred twenty".