400380030 has 32 divisors (see below), whose sum is σ = 1067680800. Its totient is φ = 106767936.

The previous prime is 400380023. The next prime is 400380037. The reversal of 400380030 is 30083004.

It is an interprime number because it is at equal distance from previous prime (400380023) and next prime (400380037).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 400379985 and 400380012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400380037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 741175 + ... + 741714.

It is an arithmetic number, because the mean of its divisors is an integer number (33365025).

Almost surely, 2^400380030 is an apocalyptic number.

400380030 is an abundant number, since it is smaller than the sum of its proper divisors (667300770).

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

400380030 is a wasteful number, since it uses less digits than its factorization.

400380030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482905 (or 1482899 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 400380030 is about 20009.4984944651. The cubic root of 400380030 is about 737.0395662852.

The spelling of 400380030 in words is "four hundred million, three hundred eighty thousand, thirty".