32420820 has 24 divisors (see below), whose sum is σ = 90778464. Its totient is φ = 8645536.

The previous prime is 32420813. The next prime is 32420827. The reversal of 32420820 is 2802423.

It is an interprime number because it is at equal distance from previous prime (32420813) and next prime (32420827).

It is a super-2 number, since 2×32420820² = 2102219138944800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32420827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270114 + ... + 270233.

It is an arithmetic number, because the mean of its divisors is an integer number (3782436).

Almost surely, 2^32420820 is an apocalyptic number.

32420820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32420820 is an abundant number, since it is smaller than the sum of its proper divisors (58357644).

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

32420820 is a wasteful number, since it uses less digits than its factorization.

32420820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540359 (or 540357 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 32420820 is about 5693.9283451761. The cubic root of 32420820 is about 318.8658417859.

The spelling of 32420820 in words is "thirty-two million, four hundred twenty thousand, eight hundred twenty".