980401820 has 24 divisors (see below), whose sum is σ = 2093742000. Its totient is φ = 385513472.

The previous prime is 980401817. The next prime is 980401837. The reversal of 980401820 is 28104089.

It is a happy number.

It is a super-2 number, since 2×980401820² = 1922375457318624800, which contains 22 as substring.

It is a congruent number.

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, 414245 + ... + 416604.

It is an arithmetic number, because the mean of its divisors is an integer number (87239250).

Almost surely, 2^980401820 is an apocalyptic number.

It is an amenable number.

980401820 is an abundant number, since it is smaller than the sum of its proper divisors (1113340180).

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

980401820 is a wasteful number, since it uses less digits than its factorization.

980401820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830917 (or 830915 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 980401820 is about 31311.3688618048. The cubic root of 980401820 is about 993.4241259994.

The spelling of 980401820 in words is "nine hundred eighty million, four hundred one thousand, eight hundred twenty".