30698040 has 64 divisors (see below), whose sum is σ = 92484000. Its totient is φ = 8151552.

The previous prime is 30698027. The next prime is 30698069. The reversal of 30698040 is 4089603.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 30697989 and 30698007.

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, 41514 + ... + 42246.

Almost surely, 2^30698040 is an apocalyptic number.

30698040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30698040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46242000).

30698040 is an abundant number, since it is smaller than the sum of its proper divisors (61785960).

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

30698040 is a wasteful number, since it uses less digits than its factorization.

30698040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096 (or 1092 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 30698040 is about 5540.5811969504. The cubic root of 30698040 is about 313.1147663398.

It can be divided in two parts, 306 and 98040, that added together give a triangular number (98346 = T₄₄₃).

The spelling of 30698040 in words is "thirty million, six hundred ninety-eight thousand, forty".